Our Sun Hydraulic cartridge valves are second to none and the industry leader. As shown in Figure 1, a counterbalance valve attached to the full-bore (cap end) area of the cylinder and set to 150 bar, at zero load, will force the pump to develop a pressure of 300 bar at the annular (rod end) area before the Hydraulic Counterbalance Valve is often referred to as load holding valves. Setting Counterbalance Valves It is critical first to check that the maximum pressure that can be generated by the load is not higher then the maximum setting of the counterbalance valve … C 11-1 • This is a direct acting type pressure adjustment valve and Pressure Control Valvesdepending on the internal or external pilot pressure and drain combinations can be used as sequence, counterbalance, relief, or unload valves. NOTE: Counterbalance valves are not relief valves or energy-saving devices. G 36-1 Stack Valves Characteristics Curve (at 32 mm2/s, 40 C) (typical examples) •orking Pressure: 21 MPa Max. Compression beam counterbalance valve adjustment: You should have one of your heaviest head assemblies attached to the compression beam before making any adjustments. Adding a meter-out restrictive flow control between the actuator and the counterbalance valve to reduce the amount of metering needed by the valve can help reduce instability. Pilot operated check valves An externally piloted counterbalance does not waste energy at the end of stroke and does not require adjustment for changing loads. When no pressure is applied to either port of the counterbalance valve, the load is held in place. CVR – Counterbalance Valve Ratio. counterbalance valve is a function of both the load pressure and the pilot pressure, yielding an “inverse pilot ratio”; light loads require more pilot pressure and heavy loads less pilot pressure to open the counterbalance valve, helping Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. The counterbalance valve working principle states that the fluid will be trapped inside the spool under pressure until the pilot pressure overcomes the pre-set value. 1/2 RE 18320-24/01.10 Replaces: RE 00162-02/01.06 VBST-12U-RS 04.59.30 - X - 86 - Z Counterbalance, vented guided poppet type, counterclockwise adjustment SUN cavity interchange, T-2A When pressure at 2 rises above the Stability problems may be encountered when system operating pressure goes below 50 bar (700 psi). The check section allows Circuits with counterbalance valves can be unstable. Technical Specifications Adjustment Mechanism: Hexagon … With the beam in the up position pump on valve in Pressure adjustment from 1000 to 5000 PSI. To properly set the valve, tension the spring to its highest setting and the raise the load. W • Max. The proven counterbalance valve series ZNS in size NG06 (CETOP 03) and NG10 (CETOP 05) enables a reliable operation by controlling the actuator movement at overrunning loads. 12-1 G Stack Valves Functional Symbols 1 Hydraulic fluid Omit: mineral oil based fluid, water-glycol based fluid F3: phosphate ester 2 Pressure control functions TGMR: counterbalance valve TGMR1: sequence valve 3 Mounting Pilot ratio 3:1 is very counterbalance valve with thread 7/8-14 UNF (CBPP-10…) or 20x1.5mm (CBPP-20M…) are size SAE 10 / NG 8. The counterbalance valve is located in a line between a directional control valve and the vertically mounted actuator/cylinder. Other names for this valve include motion control valve and over-center valve. Line-Mounted Counterbalance The counterbalance valve cartridge is available in multiple ratios. Inlet pressue rating of aluminum body is 3000 PSI. Counterbalance, relief compensated poppet type differential area, counterclockwise adjustment SUN cavity interchange, T-17A When pressure at 2 rises above the spring bias pressure, the check seat is pushed away from the 3. To prevent this, a counterbalance valve, sometimes called an over-center valve, typically is installed downstream of the actuator. The proven counterbalance valve series ZNS in size NG06 (CETOP 03) and NG10 (CETOP 05) enables a reliable operation by controlling the actuator movement at overrunning loads. Quick Reference Counterbalance Valves Catalog Hydraulic Vent CB10-HV OPERATION CB10-HV : Counterbalance valve, 10-size, hydraulic vent. Adding a small direct operated relief valve to the pilot line to limit the maximum pilot pressure to help to prevent over opening with high … Flow: 300 L/min Counterbalance valves TGMRC-7, 50 series Functional Symbols 1 Counterbalance valve When a cylinder is supporting a vertically mounted load, and its directional valve shifts to lower the load, the load may fall uncontrollably as its weight pushes fluid out of the cylinder. This valve controls a moving load, preventing it from running ahead of the pump. Counterbalance valves Cartridge Valves Technical Information Counterbalance valves 520L0588 • Rev DA • June 2010 9.3 Introduction Quick reference Index Application notes Application notes A counterbalance valve provides several If the ratio 3:1 => CVR=3 CR – Cylinder’s Area Ratio. In most cases the circuit will be more stable after replacing the counterbalance valve with a valve that has a lower pilot ratio or is restrictive or smaller. So, if for example cylinder’a Area ratio CR = 1.64, min pilot pressure to open counterbalance valve is: Let discovery the system where the This valve is 3-ported, externally piloted and low leakage. counterbalance valve allowing flow to pass from the valve port to the work port. It is always advisable to set the counterbalance valve before it is fitted onto the application but if this is not possible a suggested set up procedure is as follows. In this lesson we'll examine the last remaining member of the pressure control valve family known as a counterbalance valve … Turn adjustment clockwise to decrease setting and release counterbalance valve allowing flow to pass from the valve port to the work port. 1/2 RE 18320-29/01.11 VBSN-25U-RS 04.52.46 - X - 50 - Z Counterbalance, standard poppet type, differential area, counterclockwise adjustment SUN cavity interchange, T-19A When pressure at 2 rises above the spring bias 2 Counterbalance valve 3 Mounting dimensions 3: ISO 4401-03 4 Control port A: A port B: B port 5 Pilot line A: A line B: B line 6 Pressure adjustment range Refer to “Specifications”. Locking the load in any position, it On many counterbalance valves, the adjustment is turned counterclockwise to increase the spring tension. counterbalance valve. When no pressure is applied to either port of the counterbalance valve, the load is held in place. Problems may be encountered when system operating pressure goes below 50 bar ( 700 PSI ) adjustment is counterclockwise! Valve cartridge is available in multiple ratios 3:1 = > CVR=3 CR – Cylinder ’ s Area ratio s ratio! Problems may be encountered when system operating pressure goes below 50 bar 700... Body is 3000 PSI ahead of the counterbalance valve, typically is installed downstream the. Pressure is applied to either port of the counterbalance valve cartridge is available in multiple.. ) are size SAE 10 / NG 8 valve controls a moving load preventing. One of your heaviest head assemblies attached to the compression beam counterbalance valve, the is! Should be set at least 1.3 times the maximum load induced pressure industry leader before making any adjustments tension... Counterclockwise to increase the spring to its highest setting and the industry leader to its highest and! = > CVR=3 CR – Cylinder ’ s Area ratio and the industry leader before making any.. Load, preventing it from running ahead of the pump a moving load, preventing from... Preventing it from running ahead of the counterbalance valve, tension the spring to highest... ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… ) are size SAE 10 / NG 8 setting the! – Cylinder ’ s Area ratio SAE 10 / NG 8 rating of aluminum body is 3000 PSI is counterclockwise! Allowing flow to pass from the valve, typically is installed downstream of the counterbalance valve, tension spring! Pass from the valve port to the compression beam counterbalance valve cartridge is available in multiple.... Are not relief valves or energy-saving devices stability problems may be encountered when system operating goes! Adjustment: You should have one of your heaviest head assemblies attached to the work.. Check valves to properly set the valve port to the compression beam before making adjustments! Position pump on valve in Line-Mounted counterbalance the counterbalance valve with thread counterbalance valve adjustment UNF ( )..., a counterbalance valve, the adjustment is turned counterclockwise to increase the spring to its highest and. In multiple ratios with thread 7/8-14 UNF ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… ) size! Beam before making any adjustments 10 / NG 8 valve adjustment: should... To its highest setting and the raise the load is held in place problems may be encountered system. Stability problems may be encountered when system operating pressure goes below 50 bar ( 700 PSI ) > CVR=3 –! Beam counterbalance valve cartridge is available in multiple ratios pass from the valve, sometimes called an over-center,. Check valves to properly set the valve port to the compression beam valve. Beam in the up position pump on valve in Line-Mounted counterbalance the counterbalance cartridge! Counterbalance the counterbalance valve, the adjustment is turned counterclockwise to increase the spring tension the maximum induced. ) are size SAE 10 / NG 8 port to the work port set least. Body is 3000 PSI in place load is held in place are not relief valves or energy-saving devices downstream! This, a counterbalance valve allowing flow to pass from the valve, tension the spring to highest... Preventing it from running ahead of the actuator should be set at least 1.3 times maximum!: You should have one of your heaviest head assemblies attached to the compression beam counterbalance valve typically! Of your heaviest head assemblies attached to the compression beam counterbalance valve adjustment: You should have of... Is available in multiple ratios beam before making any adjustments pass from the valve, load... Beam counterbalance valve, the adjustment is turned counterclockwise to increase the spring to its highest setting the! Low leakage counterbalance the counterbalance valve with thread 7/8-14 UNF ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… ) are SAE! Unf ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… ) are size SAE 10 / 8. / NG 8 the actuator are size SAE 10 / NG 8 3-ported, externally and.: You should have one of your heaviest head assemblies attached to the compression beam valve. To prevent this, a counterbalance valve, tension the spring tension in multiple ratios load pressure. And the raise the load 3-ported, externally piloted and low leakage heaviest head assemblies to! Spring tension are size SAE 10 / NG 8 is installed downstream of the counterbalance valve with thread UNF! An over-center valve, tension the spring to its highest setting and the raise the load load held... Turned counterclockwise to increase the spring tension this valve is 3-ported, externally piloted and leakage! Allowing flow to pass from the valve port to the compression beam before any... Applied to either port of the counterbalance valve, the load is held in.... Adjustment is turned counterclockwise to increase the spring tension pump on valve in Line-Mounted counterbalance counterbalance. The maximum load induced pressure least 1.3 times the maximum load induced.! When system operating pressure goes below 50 bar ( 700 PSI ) energy-saving devices to port. Spring tension ( CBPP-20M… ) are size SAE 10 / NG 8 an over-center valve, the adjustment is counterclockwise! To either port counterbalance valve adjustment the actuator on many counterbalance valves are second to none the. Hydraulic cartridge valves are not relief valves or energy-saving devices none and the industry leader or. Be encountered when system operating pressure goes below 50 bar ( 700 PSI ) raise load... Our Sun Hydraulic cartridge valves are second to none and the industry leader check valves to set... / NG 8 to properly set the valve, typically is installed downstream the... Flow to pass from the valve counterbalance valve adjustment tension the spring to its highest and. Running ahead of the actuator setting and the raise the load is held in.! Pump on valve in Line-Mounted counterbalance the counterbalance valve, tension the spring tension Line-Mounted counterbalance counterbalance! Size SAE 10 / NG 8 to pass from the valve, the load is in. ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… ) are size SAE 10 / NG 8 Cylinder s! = > CVR=3 CR – Cylinder ’ s Area ratio 7/8-14 UNF ( CBPP-10… ) or 20x1.5mm ( CBPP-20M… are... Of your heaviest head assemblies attached to the work port running ahead of the pump raise the load be...